Trace

Trace is a memory map for the things that happen in person. Most apps remember what you did. Trace remembers where, and only when the people you're with are actually there.

To save a memory, everyone holds a button together, in the same spot at the same time. No solo check-ins. No saving it from the couch the next morning. Add a line and a photo, and the place is locked in.

Come back somewhere enough and it starts to run warm on your map. Every friendship grows its own trail of spots you've shared, and you can send any of it to your story. It's a quiet record of where you've been and who you were with, and the only way to build it is to show up.